<template>
	<view class="cart-container" v-if="cart.length !== 0 ">
		<!-- 收货地址组件 -->
		<my-address></my-address>
		
		<!-- 商品列表的标题区域 -->
		<view class="cart-title">
			<!-- 右侧的图标 -->
			<uni-icons type="shop" size="18"></uni-icons>
			<!-- 右侧的文本 -->
			<text class="cart-title-text">
				购物车
			</text>
		</view>
		
		<!-- 循环渲染购物车中的商品信息 -->
		<uni-swipe-action>
			<block v-for="(goods,i) in cart" :key="i">
				<uni-swipe-action-item :right-options="options" @click="swipeActionClickHandler(goods)">
					<my-goods :goods="goods" :show-radio="true" @radio-change="radioChangeHandler" :show-num="true" @num-change="numberChangeHandler"></my-goods>
				</uni-swipe-action-item>
			</block>
		</uni-swipe-action>

		<!-- 结算组件 -->
		<my-settle></my-settle>
	</view>

	<!-- 空白购物车区域 -->
	<view class="empty-cart" v-else>
		<image src="/static/cart_empty@2x.png" class= "empty-img"></image>
		<text class="tip-text">空空如也~</text>
	</view>
</template>

<script>
	import badgeMix from '@/mixins/tabbar-badge.js'
	import { mapState,mapMutations } from 'vuex'
	
	export default {
		computed:{
			...mapState('cart',['cart'])
		},
		mixins:[badgeMix],
		data() {
			return {
				options:[{
					text:'删除',
					style:{
						backgroundColor:'#F21010'
					}
				}]
			};
		},
		methods:{
			...mapMutations('cart',['updateGoodsState','updateGoodsCount','removeGoodsById']),
			radioChangeHandler(e){
				this.updateGoodsState(e)
			},
			numberChangeHandler(e){
				this.updateGoodsCount(e)
			},
			swipeActionClickHandler(goods){
				// 显示确认提示框
				uni.showModal({
					title: '删除商品',
					content: `确定要删除 "${goods.goods_name}" 吗？`,
					confirmText: '删除',
					confirmColor: '#F21010',
					cancelText: '取消',
					success: (res) => {
						if (res.confirm) {
							// 用户点击了删除按钮
							this.removeGoodsById(goods.goods_id)
							uni.showToast({
								title: '删除成功',
								icon: 'success'
							})
						} else if (res.cancel) {
							// 用户点击了取消按钮
							console.log('用户取消了删除')
						}
					}
				})
			}
		}
	}
</script>

<style lang="scss">
	.cart-container{
		padding-bottom: 50px;
	}
	.cart-title{
		height: 40px;
		display: flex;
		align-items: center;
		padding-left: 5px;
		border-bottom: 1px solid #efefef;
		.cart-title-text{
			font-size: 14px;
			margin-left: 10px;
		}
	}
	.empty-cart{
		display: flex;
		flex-direction: column;
		align-items: center;
		padding-top: 150px;
		.empty-img{
			width: 90px;
			height: 90px;
		}
		.tip-text{
			font-size: 12px;
			color: gray;
			margin-top: 15px;
		}
	}

</style>
